{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the specific steps required for a blockchain upgrade?","a":"Solution design: Based on the demand  analysis, design the blockchain upgrading solution, including technology selection, architecture adjustment, function optimization, etc."}]}],"pr":"7a01aaff8ee1ff46f5a5ff5b44de94ce6f2f84ace9c109c8da6dcc01847d2f53"}